hal: Add initial ESP32-C3 support

From internal commit 7761d6e8

components/hal/esp32c3/include/hal/mpu_ll.h

@@ -0,0 +1,53 @@
+// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <stdint.h>
+
+#include "soc/mpu_caps.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* This LL is currently unused for ESP32-C3 - cleanup is TODO ESP32-C3 IDF-2375 */
+
+static inline uint32_t mpu_ll_id_to_addr(int id)
+{
+    abort();
+}
+
+static inline void mpu_ll_set_region_rw(uint32_t addr)
+{
+    abort();
+}
+
+static inline void mpu_ll_set_region_rwx(uint32_t addr)
+{
+    abort();
+}
+
+static inline void mpu_ll_set_region_x(uint32_t addr)
+{
+    abort();
+}
+
+
+static inline void mpu_ll_set_region_illegal(uint32_t addr)
+{
+    abort();
+}
+
+#ifdef __cplusplus
+}
+#endif